Patton Oswalt may be best known for his roles in sitcoms like “The King of Queens” and voicing beloved animated characters – including a rodent with a culinary flair in “Ratatouille”. But he has faced adversity in his personal life, which he confronts in his new stand-up show “Annihilation”, touring the UK and US this summer. Oswalt spoke with Hari about his career and healing grief with laughter.